[PATCH v3 09/21] x86/alternative: Use insn_decode()

From: Borislav Petkov <bp@alien8.de>
To: X86 ML <x86@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH v3 09/21] x86/alternative: Use insn_decode()
Date: Thu,  4 Mar 2021 18:42:25 +0100	[thread overview]
Message-ID: <20210304174237.31945-10-bp@alien8.de> (raw)
In-Reply-To: <20210304174237.31945-1-bp@alien8.de>

From: Borislav Petkov <bp@suse.de>

No functional changes, just simplification.

Signed-off-by: Borislav Petkov <bp@suse.de>
---
 arch/x86/kernel/alternative.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 8d778e46725d..ce28c5c1deba 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -1274,15 +1274,15 @@ static void text_poke_loc_init(struct text_poke_loc *tp, void *addr,
 			       const void *opcode, size_t len, const void *emulate)
 {
 	struct insn insn;
+	int ret;
 
 	memcpy((void *)tp->text, opcode, len);
 	if (!emulate)
 		emulate = opcode;
 
-	kernel_insn_init(&insn, emulate, MAX_INSN_SIZE);
-	insn_get_length(&insn);
+	ret = insn_decode(&insn, emulate, MAX_INSN_SIZE, INSN_MODE_KERN);
 
-	BUG_ON(!insn_complete(&insn));
+	BUG_ON(ret < 0);
 	BUG_ON(len != insn.length);
 
 	tp->rel_addr = addr - (void *)_stext;
-- 
2.29.2

